Raunak Dey
Graduate Student (GTA)

BS-MS in Physical Sciences (2015-2020) from Indian Institute of Science Education and Research Kolkata (IISER K).

Research Interests

I am interested in Experimental Soft Matter and Biophysics. I have been using Optics based tools to probe the motion of particles in simple and complex fluids. I plan to pursue my Ph.D. in a similar direction. Take a look at my webpage to have a better understanding of my past work(s).

I used to work with Optical Tweezers during my MS in India. I looked at problems from stochastic dynamics of Brownian particles, to correlated motion in viscoelastic media. Recently I have started working on non-equilibrium aspects of driven particles where we are studying fundamental results derived from stochastic thermodynamics. 

Honors and Awards:

1. DST INSPIRE Scholarship (2015-2020) awarded by the Dept of Science and Technology, India.

2. MITACS Globalink Research Internship (2019), Canada.

3. SPIE Student author conference support by MKS Instuments (2021). 



1. Frontiers in Physics,January 2021, “Simultaneous random number generation and opticaltweezers calibration employing a learning algorithm based on the Brownian dynamics of a trappedcolloidal particle”, Raunak Dey, Subhrokoli Ghosh, Avijit Kundu and Ayan Banerjee.doi:10.3389/fphy.2020.576948  (https://www.frontiersin.org/articles/10.3389/fphy.2020.576948/full)

2. Soft Matter,June 2021, Active microrheology using pulsed optical tweezers to probe viscoelasticityof Lamin A towards diagnosis of laminopathies, Chandrayee Mukherjee, Avijit Kundu, Raunak Dey, Ayan Banerjee, Kaushik Sengupta. https://doi.org/10.1101/2021.02.05.429901

Other Publications:

1. SPIE Nanoscience + Engineering, August 2021, “Random number extraction from optically trapped Brownian oscillator in viscous and viscoelastic media using learning algorithms ”, Raunak Dey, Avijit Kundu, Subhrokoli Ghosh and Ayan Banerjee. https://spie.org/Publications/Proceedings/Paper/10.1117/12.2596502

2. SPIE Nanoscience + Engineering, “Microrheology over a broad frequency range probing multiple-sinusoid oscillating optical tweezer”, Avijit Kundu, Raunak Dey, Subhrokoli Ghosh and Ayan Banerjee. https://spie.org/Publications/Proceedings/Paper/10.1117/12.2596296

3. Bulletin of the American Physical Society “Probing medium viscoelasticity using signal transmission through coupled harmonic oscillators”, Avijit Kundu, Raunak Dey, Shuvojit Paul and Ayan Banerjee. https://meetings.aps.org/Meeting/MAR21/Session/S17.12

Memberships and Committees:

1. SPIE student member 

Works in Progress:

1. "Experimental verification of Arcsine laws in mesoscopic non-equilibrium and active systems”, Raunak Dey, Avijit Kundu, Biswajit Das and Ayan Banerjee.https://arxiv.org/abs/2104.00127v1

2. “Single-shot wideband active microrheology using multiple-sinusoid modulated Optical Tweezers”, Avijit Kudu, Raunak Dey, Shuvojit Paul and Ayan Banerjee.https://arxiv.org/abs/2103.04093